Composition for use in hermetically closing vessels.



UNITED STATES PATENT OFFICE.

CHARLES JOVIGNOT, or PARIS, FRANCE. courosrrion FOR use in mnmi'rrcsnm oL'osme vnssnns.

To all whom it may concern: n

Be it known that I, CHARLES JOVIGNOT, citizen of France, residing at 34 Avenue de lObservatoire, Paris, France, have invented new and useful Improvements in Hermetically .Closing Vessels, of which the following is aspecification. I

' h s invention relates to a composition adapted to be applied on vessels to hermetically close same. I

This composition has for a base casein or its derivatives. Acids and fatty substances have no immediate or subsequent action on the composition, whichkeeps indefinitely and is unalterable by cold, moisture or heat.

' It is consequently of great utility for hermetically closing metal, glass, porcelain, or

other vessels used for containing and preserving alimentary, chemical, pharmaceutical or other products which deteriorate by It can be understood that" contact with air. this composition, on account of the special ualities above mentioned, is especially suitblle for the purpose .and gives the best resu ts.

, The new composition is prepared in the following manner: In a liter of hot water,

100 grams of phosphate of soda are .dissolved and the hot solution thus made is gradually poured upon 200 grams of casein, to :this Is added 10 grams of fluorid of ammonia and 15 grams of glycerin. The whole is heated in a water bat of'a temperature not exceeding 65 degrees centigra e until a homogeneous and consistent liquid is obtained. Generally on the surface of this liquid, es ecially if it cools, a film forms which it is l remove before using the solution. The above proportions are given by way of example andmay be modified according to circumstances. The solution thus repared must be used hot. It is spread wit a small brush or mechanica e of the vessels which is desire to'be hermet- Speciflcation of Letters Patent. Application filed July 20, 1906. Serial No. 827,101.

est to y in the case of large quantities, on the interior dies of the cover Patented m 11, 1909.

com osition has been s read, is dipped into a so ution containing 10% of formicaldehgde, or this solution may be aplplied on the o ject by means of a small brus This solution is adapted to harden the composition after it has been applied.

The solution prepared as set forth with phosphate of soda, casein, fluorid of ainmoma and glycerin, would be too fluid to sup ort'the pressure with which the cover is app ied upon the vessel, and would conseuently run out of the edges of the cover.

0 avoid this, the solution is hardened after it is sp'read'on the cover or Vessel by dipping said cover or-Vessel in the solution ofcformic aldehyde. The solution is thus brou ht more or less to. the hardness of india rub er which it is adapted to replace in making hermetic joints.

I The cover of the vessel repared or coated as described is applied and fixed on the body of the vessel by any suitable means.

Having now described my invention, what I claim as new and desire to secure by LettersPatent is: Y 1. A composition for hermetically closing vessels, consisting of phosphate of soda,

casein, fluorid of ammonia, and glycerin in the proportions specified.

2. A composition for hermetically closing vessels consisting of phosphate of soda, casein, fiuorid of ammonia and glycerin in the proportions specified-and dipped into. a-

solution of formic aldehyde.

In testimony whereof I have name to this specification in the two subscribing witnesses.

CHARLES JOVIGNOT.

signed my presence of Witnesses:

An'romn Lsvorx, Henson 0. Coxn. 

